Anomiidae
Anomiidae is a family of saltwater clams, marine bivalve molluscs related to scallops and oysters, and known as anomiids. It contains seven genera.

Jan Johan ter Poorten · CC BY-SA 3.0 · via Wikipedia/Commons. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.
On record
Recorded, not inferred- Also called
- jinglePBDB
- Sits inside
- AnomioideaPBDB
- Diet
- suspension feederPBDB
- Life habit
- epifaunalPBDB
- Motility
- stationary, attached, epibiontPBDB
- Vision
- blindPBDB, for Bivalvia
- Environment
- marinePBDB, for Pectinida
Time the record covers
At least 305 million years on record.
The record covers at least 306 Mya to 11.7 ka. No occurrence read is dated outside 323.4 Mya to 0 Mya.
2,125 occurrences of Anomiidae on record, most of them in the Late Cretaceous. The Paleobiology Database records this as a living group. Bar height is expected occurrences, not a count: each fossil is spread across the span it is dated to, so a tall narrow bar means tight dating and a low wide one means loose.
When
2,125 occurrences- Carboniferousunder 1%
- Permianunder 1%
- Early Triassicunder 1%
- Middle Triassicunder 1%
- Late Triassicunder 1%
- Early Jurassicunder 1%
- Middle Jurassicunder 1%
- Late Jurassic3%
- Early Cretaceous2%
- Late Cretaceous41%
- Paleocene1%
- Eocene11%
- Oligocene2%
- Miocene16%
- Pliocene9%
- Pleistocene12%
- Holoceneunder 1%
These are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. More on what this infers.
Found in
394 formations
- Providence Formation95
- Prairie Bluff Formation · Selma Group92
- Escondido Formation86
- Peedee Formation48
- Vaqueros Formation45
- Corsicana Marl Formation38
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The named rock units Anomiidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 370 further formations hold fewer occurrences each and are not listed. 397 occurrences have no formation on record, which is common for older literature.
Anomiidae and its relatives
Late CretaceousWhere Anomiidae and its relatives were recorded in the Late Cretaceous.
Found in the same rock
1,379 taxa- Anomia argentaria132 sites
- Exogyra (Exogyra) costata117 sites
- Crassatella vadosa102 sites
- Veniella conradi93 sites
- Syncyclonema88 sites
- Crenella serica82 sites
- Cyprimeria82 sites
- Nuculana81 sites
- Serpula81 sites
- Pycnodonte vesicularis79 sites
- Idonearca capax74 sites
- Cymbophora73 sites
- Cubitostrea tecticosta71 sites
- Granocardium71 sites
- Bryozoa69 sites
- Turritella vertebroides68 sites
- Camptonectes bubonis67 sites
- Cliona67 sites
- Pseudolimea reticulata67 sites
- Turritella67 sites
- Linearis64 sites
- Liopistha protexta63 sites
- Gryphaeostrea vomer61 sites
- Vertebrata59 sites
The Paleobiology Database records 1,508 sites for Anomiidae, and this reads 240 of them. Of that, one read hit the database's own return limit, so every count below is a floor rather than a total. The number is how many of those sites it was catalogued from too. The 24 sharing the most are listed.
This is not a list of everything alive at the time. It is only what has come out of the same ground as this animal and been written down.
Entered from
467 references- Upper Cretaceous (Maestrichtian) Mollusca from the Haustator bilira Assemblage Zone in the East Gulf Coastal Plain142
- Upper Cretaceous (Maestrichtian) larger invertebrate Fossils from the Haustator bilira Assemblage Zone in the west gulf Coastal Plain122
- Upper Cretaceous (Maestrichtian) larger invertebrates from the Haustator bilira Assemblage Zone in the Atlantic Coastal Plain with further data for the East Gulf110
- Unpublished data on Cretaceous-Paleocene molluscan assemblages80
- Unpublished data57
- Unpublished census data from Atlantic coastal plain and circum-Caribbean Neogene assemblages and taxonomic opinions47
- The Vaqueros Formation, Lower Miocene of California. I. Paleontology41
- Larger invertebrate fossils of the Woodbine formation (Cenomanian) of Texas33
- The Black Creek-Peedee formational contact (Upper Cretaceous) in the Cape Fear river region of North Carolina32
- Map and checklists of Jurassic and Cretaceous macrofossil localities within the San Jose 1:100,000 Quadrangle, California, and discussion of paleontological results30
- Resilience of marine invertebrate communities during the early Cenozoic hyperthermals29
- The Molluscan Fauna of the Alum Bluff Group of Florida29
Each of the 2,125 occurrences read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. 455 further references are not listed. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content1
Picture of Anomiidae
- Source
- Wikipedia/Commons
- Credit
- Jan Johan ter Poorten
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
The description on this site
- Source
- Wikipedia, “Anomiidae”
- Licence
- CC BY-SA 4.0
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itAnomioidea through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Rafinesque 1815